/* roulang page: index */
:root{
  --ink:#1C1235;
  --ink-2:#2A1B4E;
  --brand:#5B3CE8;
  --brand-soft:#EEE9FF;
  --cyan:#2FD6C4;
  --coral:#FF6A3D;
  --coral-d:#E4542B;
  --bg:#F5F3FA;
  --surface:#FFFFFF;
  --text:#181327;
  --muted:#5A5470;
  --faint:#8C86A0;
  --line:#E4E0F0;
  --ok:#1FA971;
  --err:#E5484D;
  --r-card:16px;
  --r-ctrl:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(28,18,53,.06);
  --sh-2:0 12px 32px rgba(42,27,78,.14);
  --sh-3:0 20px 48px rgba(28,18,53,.20);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
.site-body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.92;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
.site-body a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.site-body img{max-width:100%;display:block}
.site-body button{font-family:inherit}
.site-body ul,.site-body ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-2);background:rgba(255,255,255,.99)}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-stuck .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--ink);
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);
  padding:6px;gap:3px;flex:0 0 auto;
}
.brand-mark i{background:var(--cyan);border-radius:2px;display:block}
.brand-mark i:nth-child(5){background:var(--coral)}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.01em;line-height:1.2;color:var(--ink)}
.brand-sub{display:block;font-size:11.5px;font-weight:500;color:var(--faint);letter-spacing:.06em}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;flex-wrap:wrap}
.chip{
  position:relative;
  display:inline-flex;align-items:center;
  height:36px;padding:0 14px;border-radius:var(--r-pill);
  background:#F0EDFA;color:var(--ink-2);
  font-size:14px;font-weight:600;white-space:nowrap;
}
.chip:hover{background:#E4DEF8;color:var(--brand)}
.chip.is-active{background:var(--ink);color:#fff}
.chip.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:3px;border-radius:2px;background:var(--cyan);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-ctrl);
  font-size:15.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all .2s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 6px 16px rgba(255,106,61,.28)}
.btn-primary:hover{background:var(--coral-d);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(228,84,43,.32)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-2px)}
.btn-quiet{background:var(--brand-soft);color:var(--brand);border-color:transparent}
.btn-quiet:hover{background:#E0D8FF;color:var(--brand)}
.btn-block{width:100%}
.hamburger{
  display:none;width:42px;height:42px;border-radius:var(--r-ctrl);
  background:var(--brand-soft);color:var(--brand);border:none;cursor:pointer;font-size:17px;
}
.hamburger:hover{background:#E0D8FF}

.drawer-mask{
  position:fixed;inset:0;background:rgba(28,18,53,.4);
  opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
  background:var(--ink);color:#fff;z-index:90;
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  padding:24px 20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{width:38px;height:38px;border-radius:var(--r-ctrl);border:none;background:rgba(255,255,255,.12);color:#fff;cursor:pointer}
.drawer-chips{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.drawer-chips a{
  display:flex;align-items:center;justify-content:center;
  min-height:44px;padding:6px 10px;border-radius:var(--r-ctrl);
  background:rgba(255,255,255,.09);color:#EDE9FF;font-size:14px;font-weight:600;text-align:center;
}
.drawer-chips a:hover{background:rgba(91,60,232,.5);color:#fff}
.drawer-chips a.is-active{background:#fff;color:var(--ink)}
.drawer-cta{margin-top:auto}

/* ---------- 倒计时条 ---------- */
.countdown-bar{
  background:linear-gradient(90deg,#FF6A3D 0%,#E4542B 100%);
  color:#fff;
}
.countdown-inner{
  display:flex;align-items:center;gap:18px;min-height:44px;padding-top:4px;padding-bottom:4px;
}
.cd-label{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  background:rgba(255,255,255,.18);padding:3px 12px;border-radius:var(--r-pill);white-space:nowrap;
}
.cd-timer{display:flex;align-items:center;gap:4px;font-size:21px;font-weight:800;letter-spacing:.02em}
.cd-timer span{min-width:32px;text-align:center}
.cd-sep{opacity:.7}
.cd-link{color:#fff;font-size:14px;font-weight:600;margin-left:auto;border-bottom:1px solid transparent}
.cd-link:hover{color:#fff;border-bottom-color:#fff}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;
  padding:80px 0 88px;
}
.hero::before{
  content:"";position:absolute;top:-40px;right:-40px;width:320px;height:320px;
  background-image:radial-gradient(circle,rgba(47,214,196,.5) 2px,transparent 2.4px);
  background-size:22px 22px;opacity:.35;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-60px;left:-30px;width:260px;height:260px;
  background-image:radial-gradient(circle,rgba(255,255,255,.45) 2px,transparent 2.4px);
  background-size:26px 26px;opacity:.14;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--cyan);background:rgba(47,214,196,.12);
  border-radius:var(--r-pill);padding:5px 14px;margin-bottom:20px;
}
.hero h1{
  font-size:44px;line-height:1.24;font-weight:800;letter-spacing:.01em;margin-bottom:16px;
}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero-sub{font-size:17.5px;color:rgba(255,255,255,.78);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:22px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.85)}
.hero-points i{color:var(--cyan);font-size:15px}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--sh-3);aspect-ratio:16/11;background:#231747}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:rgba(28,18,53,.08)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan)}
.section-title{font-size:30px;line-height:1.35;font-weight:700;color:var(--ink);margin-bottom:14px}
.section-desc{color:var(--muted);font-size:16.5px}
.section-alt{background:var(--surface)}
.section-ink{background:var(--ink);color:#fff}
.section-ink .section-title,.section-ink h2,.section-ink h3{color:#fff}
.section-ink .section-desc{color:rgba(255,255,255,.72)}
.section-ink .eyebrow{background:rgba(47,214,196,.14);color:var(--cyan)}

/* ---------- 卖点非对称 ---------- */
.feature-grid{display:grid;grid-template-columns:6fr 5fr;gap:24px;align-items:stretch}
.feature-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:16px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.feature-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.feature-icon{
  width:52px;height:52px;border-radius:14px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:20px;
}
.feature-main h3{font-size:22px;font-weight:700;color:var(--ink)}
.feature-main p{color:var(--muted);font-size:16px}
.feature-list{display:flex;flex-direction:column;gap:20px}
.feature-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:flex;gap:16px;box-shadow:var(--sh-1);flex:1;
  transition:transform .25s ease,box-shadow .25s ease;
}
.feature-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.feature-item .fi{
  width:44px;height:44px;flex:0 0 auto;border-radius:12px;
  background:rgba(47,214,196,.14);color:#17A18F;display:grid;place-items:center;font-size:17px;
}
.feature-item h4{font-size:17.5px;font-weight:700;color:var(--ink);margin-bottom:6px}
.feature-item p{font-size:15px;color:var(--muted)}

/* ---------- 分类入口 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.entry-card{
  position:relative;display:block;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px 24px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  overflow:hidden;
}
.entry-card::after{
  content:"";position:absolute;right:-20px;top:-20px;width:90px;height:90px;
  background-image:radial-gradient(circle,rgba(91,60,232,.18) 2px,transparent 2.4px);
  background-size:14px 14px;opacity:.9;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6CCFF}
.entry-num{font-size:13px;font-weight:700;color:var(--cyan);letter-spacing:.1em;margin-bottom:12px;display:block}
.entry-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:8px}
.entry-card p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.entry-more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.entry-card:hover .entry-more{text-decoration:underline}

/* ---------- 图墙 ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:176px;gap:16px}
.gallery figure{position:relative;margin:0;border-radius:var(--r-card);overflow:hidden;background:#E9E4F8}
.gallery .big{grid-column:span 2;grid-row:span 2}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.gallery figure::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(28,18,53,0) 42%,rgba(28,18,53,.72) 100%);
  transition:background-color .3s ease;
}
.gallery figure:hover img{transform:scale(1.03)}
.gallery figure:hover::after{background-color:rgba(91,60,232,.22)}
.gallery figcaption{
  position:absolute;left:16px;right:16px;bottom:12px;z-index:2;
  color:#fff;font-size:14.5px;font-weight:600;
}
.gallery .big figcaption{font-size:17px}

/* ---------- 数据条 ---------- */
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.14);border-radius:var(--r-card);overflow:hidden}
.metric{background:var(--ink);padding:26px 24px}
.metric strong{display:block;font-size:30px;font-weight:800;color:var(--cyan);line-height:1.2}
.metric span{display:block;margin-top:6px;font-size:14px;color:rgba(255,255,255,.7)}

/* ---------- CTA 表单 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink);border-radius:24px;padding:48px;
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;right:-30px;bottom:-40px;width:240px;height:240px;
  background-image:radial-gradient(circle,rgba(47,214,196,.5) 2px,transparent 2.4px);
  background-size:20px 20px;opacity:.22;pointer-events:none;
}
.cta-band h2{font-size:27px;font-weight:700;color:#fff;margin-bottom:12px;position:relative}
.cta-band p{color:rgba(255,255,255,.72);font-size:16px;position:relative}
.signup-form{position:relative;display:flex;gap:12px}
.signup-form input{
  flex:1 1 auto;min-width:0;height:48px;padding:0 16px;border-radius:var(--r-ctrl);
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.1);
  color:#fff;font-size:15px;
}
.signup-form input::placeholder{color:rgba(255,255,255,.5)}
.signup-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(47,214,196,.55)}
.form-tip{margin-top:12px;font-size:13px;color:var(--cyan);min-height:18px}
.form-note{margin-top:8px;font-size:12.5px;color:rgba(255,255,255,.5)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px}
.faq-item{border-bottom:1px solid var(--line);padding:4px 0 4px 0;position:relative}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 44px 20px 18px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease,background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:2px;
  background:var(--cyan);transform:scaleY(0);transform-origin:top;transition:transform .25s ease;
}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  font-size:12px;color:var(--faint);transition:transform .25s ease,color .25s ease;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::before{transform:scaleY(1)}
.faq-item[open] summary::after{content:"\f068";color:var(--brand)}
.faq-item summary:hover{background:#F8F6FE}
.faq-answer{padding:0 44px 22px 18px;font-size:15px;line-height:1.85;color:var(--muted)}
.faq-item[open] .faq-answer{animation:faqIn .28s ease}
@keyframes faqIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px}
.news-head .link-more{font-size:15px;font-weight:600;white-space:nowrap}
.news-head .link-more:hover{text-decoration:underline}
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-hero .thumb{aspect-ratio:16/9;overflow:hidden;background:#E9E4F8}
.news-hero .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.news-hero:hover .thumb img{transform:scale(1.03)}
.news-hero-body{padding:24px}
.news-hero-body h3{font-size:20px;font-weight:700;color:var(--ink);margin:12px 0 10px;line-height:1.5}
.news-hero-body p{font-size:15px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;
}
.meta{display:flex;align-items:center;gap:12px;margin-top:14px;font-size:13.5px;color:var(--faint)}
.meta .read{color:var(--brand);font-weight:600;margin-left:auto}
.news-list{display:flex;flex-direction:column;gap:12px}
.news-row{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease;
}
.news-row:hover{transform:translateY(-4px);box-shadow:var(--sh-2);background:#FDFCFF}
.news-row h3{
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px;
}
.news-row .row-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--faint)}
.news-empty{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
  color:var(--muted);text-align:center;padding:32px;grid-column:1/-1;
}
.news-empty i{font-size:26px;color:var(--brand)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--cyan)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero h1{font-size:40px}
  .section{padding:76px 0}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-chips{display:none}
  .hamburger{display:inline-flex;align-items:center;justify-content:center}
  .hero{padding:64px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:2;max-width:640px}
  .feature-grid{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px}
  .gallery .big{grid-column:span 2;grid-row:span 1}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:24px}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .site-body{font-size:16px}
  .hero h1{font-size:30px}
  .section{padding:56px 0}
  .section-title{font-size:25px}
  .hero-sub{font-size:16px}
  .btn{height:46px;padding:0 20px}
  .news-grid{grid-template-columns:1fr}
  .gallery{grid-auto-rows:132px;gap:12px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .brand-text{font-size:15.5px}
  .brand-sub{display:none}
  .hero{padding:52px 0 60px}
  .hero h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .hero-points{gap:12px 18px}
  .entry-grid{grid-template-columns:1fr}
  .metric-strip{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr;grid-auto-rows:170px}
  .gallery .big{grid-column:span 1}
  .cta-band{padding:26px;border-radius:18px}
  .signup-form{flex-direction:column}
  .signup-form .btn{width:100%}
  .news-head{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .countdown-inner{gap:10px;min-height:48px}
  .cd-label{display:none}
  .cd-timer{font-size:19px}
  .cd-link{font-size:13px}
  .footer-bottom{padding-top:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* roulang page: article */
:root{
  --ink:#1C1235;
  --ink-2:#2A1B4E;
  --violet:#5B3CE8;
  --violet-soft:#EEE9FF;
  --cyan:#2FD6C4;
  --coral:#FF6A3D;
  --coral-d:#E4542B;
  --bg:#F5F3FA;
  --text:#181327;
  --muted:#5A5470;
  --faint:#8C86A0;
  --line:#E4E0F0;
  --ok:#1FA971;
  --err:#E5484D;
  --r-card:16px;
  --r-ctrl:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(28,18,53,.06);
  --sh-2:0 12px 32px rgba(42,27,78,.14);
  --sh-3:0 20px 48px rgba(28,18,53,.20);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
}
img{max-width:100%;display:block}
a{color:var(--violet);text-decoration:none;transition:color .18s ease}
button,input{font:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (max-width:1023px){.container{padding:0 24px}}
@media (max-width:639px){.container{padding:0 16px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--ink);transition:box-shadow .25s ease}
.site-header.is-compact{box-shadow:0 12px 32px rgba(17,10,34,.36)}
.bar{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s ease}
.site-header.is-compact .bar{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:grid;grid-template-columns:repeat(3,4px);grid-template-rows:repeat(3,4px);gap:3px}
.brand-mark i{display:block;width:4px;height:4px;border-radius:1px;background:var(--cyan);opacity:.9}
.brand-text{font-size:18px;font-weight:800;color:#fff;white-space:nowrap;letter-spacing:.01em}
.nav-chips{display:flex;align-items:center;gap:8px;margin:0 auto}
.chip{
  position:relative;display:inline-flex;align-items:center;height:36px;padding:0 14px;
  border-radius:var(--r-pill);font-size:14px;font-weight:600;color:#CFC9E6;
  background:rgba(255,255,255,.07);
  transition:background .2s ease,color .2s ease;
}
.chip:hover{background:rgba(255,255,255,.16);color:#fff}
.chip.is-active{background:var(--violet);color:#fff}
.chip.is-active::after{
  content:"";position:absolute;left:50%;bottom:-7px;transform:translateX(-50%);
  width:22px;height:3px;border-radius:2px;background:var(--cyan);
}
.bar-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-ctrl);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 6px 18px rgba(255,106,61,.30)}
.btn-coral:hover{background:var(--coral-d);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,61,.36)}
.btn-coral:active{transform:translateY(0);filter:brightness(.95)}
.btn-outline{background:#fff;color:var(--violet);border-color:#D9D2F3}
.btn-outline:hover{background:var(--violet-soft);color:var(--violet);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.hamburger{
  display:none;width:40px;height:40px;border-radius:var(--r-ctrl);border:0;cursor:pointer;
  background:rgba(255,255,255,.08);align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:#fff}
@media (max-width:1023px){
  .nav-chips{display:none}
  .bar-right .btn-coral{display:none}
  .hamburger{display:inline-flex}
}
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(28,18,53,.42);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:80;height:100%;width:308px;max-width:86vw;
  background:var(--ink-2);padding:24px 20px;display:flex;flex-direction:column;gap:20px;
  overflow-y:auto;transform:translateX(100%);transition:transform .3s ease;
}
.drawer.is-open{transform:translateX(0)}
.drawer .drawer-title{font-size:13px;font-weight:700;color:#A79FD0;letter-spacing:.1em}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.drawer-grid .chip{width:100%;height:42px;justify-content:flex-start;background:rgba(255,255,255,.08)}
.drawer-grid .chip.is-active::after{display:none}
.drawer .btn{width:100%}

/* ---------- 文章头部 ---------- */
.article-head{background:#fff;border-bottom:1px solid var(--line);padding:34px 0 30px}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14px;color:var(--faint)}
.crumbs a{color:var(--faint)}
.crumbs a:hover{color:var(--violet)}
.crumbs .sep{color:#C6C0DC}
.article-head h1{
  font-size:clamp(26px,3.6vw,42px);line-height:1.28;font-weight:800;
  letter-spacing:.01em;margin:14px 0 18px;color:var(--text);
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--faint)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C6C0DC}
.badge-cat{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--violet-soft);color:var(--violet);font-size:13px;font-weight:600;
}

/* ---------- 正文布局 ---------- */
.reading{
  display:grid;grid-template-columns:minmax(0,1fr);gap:56px;
  padding:48px 0 64px;
}
@media (min-width:1280px){
  .reading{grid-template-columns:minmax(0,760px) 240px;justify-content:center}
}
.toc{display:none}
@media (min-width:1280px){.toc{display:block}}
.toc-inner{position:sticky;top:96px}
.toc .toc-title{font-size:13px;font-weight:700;color:var(--faint);letter-spacing:.1em;margin:0 0 12px}
.toc ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc a{
  display:block;font-size:14px;line-height:1.55;color:var(--muted);
  padding:6px 0 6px 14px;border-left:2px solid var(--line);
  transition:color .2s ease,border-color .2s ease;
}
.toc a:hover{color:var(--violet);border-left-color:#BDB2F0}
.toc a.is-current{color:var(--violet);font-weight:600;border-left-color:var(--cyan)}

/* ---------- 文章正文排版 ---------- */
.article-body{font-size:17px;line-height:1.95;color:var(--text);counter-reset:h3c;max-width:760px}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  counter-reset:h3c;position:relative;font-size:26px;font-weight:700;line-height:1.4;
  margin:40px 0 16px;padding-left:18px;color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.36em;width:4px;height:18px;
  border-radius:2px;background:var(--violet);
}
.article-body h3{
  counter-increment:h3c;font-size:20px;font-weight:600;line-height:1.5;margin:28px 0 12px;
}
.article-body h3::before{content:counter(h3c) ". ";color:var(--violet);font-weight:700}
.article-body blockquote{
  background:#F3F0FF;border-left:3px solid var(--cyan);border-radius:0 var(--r-ctrl) var(--r-ctrl) 0;
  padding:16px 20px;margin:0 0 1.4em;color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.5em;line-height:1.8}
.article-body li{margin:8px 0}
.article-body img{border-radius:var(--r-ctrl);margin:24px auto}
.article-body a{color:var(--violet);text-decoration:underline;text-underline-offset:3px}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:15px}
.article-body th{background:var(--ink);color:#fff;text-align:left;padding:12px 14px;font-weight:600}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even) td{background:#FAF9FE}
.article-body strong{font-weight:700}

.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:64px 24px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .empty-mark{
  width:52px;height:52px;margin:0 auto 18px;border-radius:14px;background:var(--violet-soft);
  display:grid;grid-template-columns:repeat(3,4px);grid-template-rows:repeat(3,4px);gap:3px;
  align-content:center;justify-content:center;
}
.empty-state .empty-mark i{display:block;width:4px;height:4px;border-radius:1px;background:var(--violet)}
.article-body .empty-state p{margin:0 0 10px}
.article-body .empty-state .empty-title{font-size:20px;font-weight:700;color:var(--text)}
.article-body .empty-state .empty-desc{font-size:15px;color:var(--muted);max-width:420px;margin:0 auto 22px}

/* ---------- 文章底部 ---------- */
.article-foot{padding:0 0 88px}
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.tag-row .label{font-size:14px;color:var(--faint);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);color:var(--muted);font-size:13px;font-weight:500;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.tag:hover{background:#F7F5FF;border-color:#C9BFF5;color:var(--violet)}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:32px 0 0}
@media (max-width:639px){.post-nav{grid-template-columns:1fr}}
.post-nav a{
  display:block;padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);color:var(--text);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-nav a:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D9D2F3;color:var(--text)}
.post-nav .dir{display:block;font-size:13px;color:var(--faint);margin-bottom:6px}
.post-nav .ttl{font-size:16px;font-weight:600;line-height:1.5}
.post-nav .next{text-align:right}
.sec-title{
  position:relative;font-size:22px;font-weight:700;margin:0 0 20px;padding-left:16px;color:var(--text);
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.34em;width:4px;height:18px;border-radius:2px;background:var(--violet);
}
.rec-block{margin-top:56px}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:1023px){.rec-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:639px){.rec-grid{grid-template-columns:1fr}}
.rec-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);color:var(--text);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D9D2F3;color:var(--text)}
.rec-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#EFEBFA}
.rec-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rec-card:hover .thumb img{transform:scale(1.03)}
.rec-card .body{padding:18px 20px 20px}
.rec-card h3{font-size:16px;font-weight:600;line-height:1.5;margin:0 0 10px}
.rec-card .time{font-size:13px;color:var(--faint)}
.cta-strip{
  margin-top:48px;background:#F3F0FF;border:1px solid #E4DDFF;border-radius:var(--r-card);
  padding:24px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.cta-strip .cta-text{font-size:16px;font-weight:600;color:var(--ink);margin:0}
.cta-strip .cta-text span{display:block;font-size:14px;font-weight:400;color:var(--muted);margin-top:4px}
@media (max-width:639px){.cta-strip .btn{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9B1DA;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.site-footer .brand{margin-bottom:14px}
.site-footer .brand-text{font-size:17px}
.footer-brand p{font-size:14px;line-height:1.85;color:#9C93C4;margin:0;max-width:330px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 14px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col li,.footer-col a{font-size:14px;color:#B9B1DA}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:13px;color:#8E86B8;padding-top:20px;padding-bottom:20px;
}

/* roulang page: category1 */
:root{
    --violet-deep:#1C1235;
    --violet-mid:#2A1B4E;
    --violet:#5B3CE8;
    --violet-soft:#EEE9FF;
    --violet-tint:#F0EDFA;
    --cyan:#2FD6C4;
    --coral:#FF6A3D;
    --coral-deep:#E4542B;
    --bg:#F5F3FA;
    --surface:#FFFFFF;
    --text:#181327;
    --muted:#5A5470;
    --weak:#8C86A0;
    --line:#E4E0F0;
    --ok:#1FA971;
    --warn:#E5484D;
    --r-card:16px;
    --r-ctl:12px;
    --sh-1:0 1px 2px rgba(28,18,53,.06);
    --sh-2:0 12px 32px rgba(42,27,78,.14);
    --sh-3:0 20px 48px rgba(28,18,53,.20);
    --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font);
    font-size:16px;
    line-height:1.9;
    color:var(--text);
    background:var(--bg);
    letter-spacing:.01em;
  }
  img{max-width:100%;display:block;}
  a{color:var(--violet);text-decoration:none;transition:color .2s ease;}
  a:hover{color:var(--coral-deep);}
  button,input{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{
    font-size:28px;
    line-height:1.35;
    font-weight:700;
    margin:10px 0 12px;
    letter-spacing:.01em;
  }
  .section-head p{color:var(--muted);font-size:16px;max-width:820px;}
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:600;
    color:var(--violet);
    background:var(--violet-soft);
    border-radius:999px;
    padding:5px 14px;
    letter-spacing:.02em;
  }
  .eyebrow::before{
    content:"";
    width:6px;height:6px;border-radius:50%;
    background:var(--cyan);
  }

  /* 顶部导航 */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--violet-deep);
    border-bottom:1px solid rgba(255,255,255,.08);
    transition:box-shadow .25s ease,background .25s ease;
  }
  .site-header.is-scrolled{box-shadow:0 10px 30px rgba(28,18,53,.35);}
  .header-inner{
    display:flex;
    align-items:center;
    gap:24px;
    height:72px;
    transition:height .25s ease;
  }
  .site-header.is-scrolled .header-inner{height:60px;}
  .brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
    color:#fff;
  }
  .brand:hover{color:#fff;}
  .brand-mark{
    display:grid;
    grid-template-columns:repeat(3,4px);
    grid-template-rows:repeat(3,4px);
    gap:3px;
    padding:7px;
    border-radius:10px;
    background:rgba(91,60,232,.35);
    border:1px solid rgba(47,214,196,.35);
  }
  .brand-mark i{display:block;width:4px;height:4px;border-radius:50%;background:var(--cyan);opacity:.85;}
  .brand-mark i:nth-child(5){background:var(--coral);opacity:1;}
  .brand-text{font-size:17px;font-weight:800;letter-spacing:.02em;white-space:nowrap;}
  .nav-chips{display:flex;align-items:center;gap:8px;margin-left:8px;}
  .chip{
    display:inline-flex;
    align-items:center;
    height:36px;
    padding:0 14px;
    border-radius:999px;
    font-size:14px;
    font-weight:600;
    color:#CFC7E8;
    background:rgba(255,255,255,.08);
    position:relative;
    white-space:nowrap;
    transition:background .2s ease,color .2s ease;
  }
  .chip:hover{background:rgba(255,255,255,.16);color:#fff;}
  .chip.is-active{background:var(--violet);color:#fff;}
  .chip.is-active::after{
    content:"";
    position:absolute;
    left:50%;
    transform:translateX(-50%);
    bottom:-9px;
    width:22px;height:3px;border-radius:2px;
    background:var(--cyan);
  }
  .header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
  .nav-toggle{
    display:none;
    width:40px;height:40px;
    border-radius:var(--r-ctl);
    background:rgba(255,255,255,.10);
    border:1px solid rgba(255,255,255,.16);
    cursor:pointer;
    padding:0;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:4px;
  }
  .nav-toggle span{display:block;width:16px;height:2px;background:#fff;border-radius:2px;}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(28,18,53,.4);
    opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:70;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
    background:var(--violet-deep);
    z-index:80;
    transform:translateX(100%);
    transition:transform .28s ease;
    padding:22px;
    display:flex;flex-direction:column;gap:18px;
    overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-chips{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
  .drawer .chip{justify-content:center;height:40px;}
  .drawer-close{
    align-self:flex-end;
    background:rgba(255,255,255,.10);
    color:#fff;border:1px solid rgba(255,255,255,.16);
    width:36px;height:36px;border-radius:10px;cursor:pointer;
    font-size:16px;line-height:1;
  }

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--r-ctl);
    font-size:15px;font-weight:600;letter-spacing:.01em;
    border:1px solid transparent;cursor:pointer;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  }
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn-primary{background:var(--coral);color:#fff;box-shadow:var(--sh-1);}
  .btn-primary:hover{background:var(--coral-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
  .btn-primary:active{transform:translateY(0);filter:brightness(.95);}
  .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
  .btn-ghost:hover{background:var(--violet-soft);color:var(--violet-deep);border-color:transparent;}
  .btn-outline{background:transparent;color:var(--violet);border-color:var(--violet);}
  .btn-outline:hover{background:var(--violet-soft);color:var(--violet-deep);transform:translateY(-2px);}
  .btn-text{
    height:36px;padding:0;border:none;background:none;
    color:var(--violet);font-weight:600;font-size:14px;
  }
  .btn-text:hover{color:var(--coral-deep);text-decoration:underline;}

  /* 面包屑 */
  .breadcrumb{
    display:flex;align-items:center;gap:8px;
    font-size:14px;color:var(--weak);padding:20px 0 0;
  }
  .breadcrumb a{color:var(--weak);}
  .breadcrumb a:hover{color:var(--violet);}
  .breadcrumb .sep{color:#BFB9D2;}

  /* 页面头部 */
  .page-hero{
    position:relative;
    background:linear-gradient(135deg,var(--violet-deep) 0%,var(--violet-mid) 100%);
    color:#fff;
    padding-bottom:56px;
    overflow:hidden;
  }
  .page-hero::after{
    content:"";
    position:absolute;
    right:-60px;top:-40px;
    width:300px;height:300px;
    background-image:radial-gradient(rgba(47,214,196,.5) 1.5px,transparent 1.6px);
    background-size:22px 22px;
    opacity:.28;
    pointer-events:none;
  }
  .page-hero .breadcrumb{color:#B4ACD2;}
  .page-hero .breadcrumb a{color:#B4ACD2;}
  .page-hero .breadcrumb a:hover{color:var(--cyan);}
  .page-hero .breadcrumb .sep{color:#6E659A;}
  .page-hero-inner{position:relative;z-index:2;padding-top:24px;}
  .page-hero h1{
    font-size:40px;
    line-height:1.25;
    font-weight:800;
    margin:16px 0 16px;
    max-width:860px;
  }
  .page-hero .lead{
    font-size:17px;
    line-height:1.9;
    color:#D6D0EC;
    max-width:760px;
  }
  .hero-points{
    display:flex;
    flex-wrap:wrap;
    gap:12px 28px;
    margin-top:26px;
  }
  .hero-points li{
    display:flex;align-items:center;gap:8px;
    font-size:14px;color:#C7C0E2;
  }
  .hero-points li::before{
    content:"";
    width:8px;height:8px;border-radius:2px;
    background:var(--cyan);
    flex:0 0 auto;
  }

  /* 步骤时间轴布局 */
  .steps-layout{
    display:grid;
    grid-template-columns:3fr 9fr;
    gap:36px;
    align-items:start;
  }
  .steps-rail{
    position:sticky;
    top:96px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:20px 18px;
  }
  .rail-title{
    font-size:13px;font-weight:700;color:var(--weak);
    letter-spacing:.08em;margin-bottom:14px;
  }
  .rail-list{position:relative;}
  .rail-list li{position:relative;padding-left:0;}
  .rail-item{
    display:flex;align-items:center;gap:12px;
    padding:9px 10px;
    border-radius:var(--r-ctl);
    color:var(--muted);
    font-size:14px;
    font-weight:600;
    transition:background .2s ease,color .2s ease;
  }
  .rail-item:hover{background:var(--violet-tint);color:var(--violet);}
  .rail-item.is-active{background:var(--violet-tint);color:var(--violet-deep);}
  .rail-dot{
    flex:0 0 auto;
    width:26px;height:26px;border-radius:50%;
    display:inline-flex;align-items:center;justify-content:center;
    font-size:13px;font-weight:700;
    background:#F0EDFA;color:var(--violet);
    border:1px solid rgba(91,60,232,.22);
    font-variant-numeric:tabular-nums;
  }
  .rail-item.is-active .rail-dot{background:var(--cyan);color:var(--violet-deep);border-color:transparent;}

  .steps-body{display:flex;flex-direction:column;gap:24px;}
  .step-block{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:26px 28px;
    transition:transform .2s ease,box-shadow .2s ease;
  }
  .step-block:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
  .step-head{display:flex;align-items:center;gap:14px;margin-bottom:12px;}
  .step-num{
    width:38px;height:38px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--violet-deep);color:#fff;
    font-weight:800;font-size:16px;
    font-variant-numeric:tabular-nums;
  }
  .step-block h3{font-size:20px;font-weight:600;line-height:1.4;}
  .step-block p{color:var(--muted);font-size:16px;margin-bottom:14px;}
  .step-list li{
    position:relative;
    padding-left:20px;
    font-size:15px;
    color:var(--text);
    line-height:1.8;
    margin-bottom:8px;
  }
  .step-list li::before{
    content:"";
    position:absolute;left:0;top:11px;
    width:8px;height:8px;border-radius:50%;
    background:rgba(91,60,232,.25);
    border:2px solid var(--violet);
    box-sizing:border-box;
  }
  .step-figure{margin-top:18px;border-radius:12px;overflow:hidden;background:var(--violet-tint);}
  .step-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .step-figure figcaption{font-size:13px;color:var(--weak);padding:10px 14px;background:#FAF9FE;}

  /* 登录前准备 */
  .prep-wrap{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
  }
  .prep-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:24px;
    box-shadow:var(--sh-1);
    transition:transform .2s ease,box-shadow .2s ease;
  }
  .prep-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
  .prep-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
  .prep-card p{font-size:15px;color:var(--muted);line-height:1.85;}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
  .tag{
    display:inline-flex;align-items:center;height:26px;
    padding:0 12px;border-radius:999px;
    font-size:13px;font-weight:600;
    background:var(--violet-soft);color:var(--violet);
  }
  .tag-cyan{background:rgba(47,214,196,.14);color:#12897C;}
  .tag-ok{background:rgba(31,169,113,.12);color:var(--ok);}
  .tag-warn{background:rgba(229,72,77,.12);color:var(--warn);}

  /* 卡点速查 */
  .trouble-list{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--sh-1);
  }
  .trouble-row{
    display:grid;
    grid-template-columns:1.1fr 2.6fr auto;
    gap:18px;
    align-items:center;
    padding:18px 24px;
    border-bottom:1px solid var(--line);
    transition:background .2s ease;
  }
  .trouble-row:last-child{border-bottom:none;}
  .trouble-row:hover{background:#F8F6FE;}
  .trouble-row strong{font-size:15px;font-weight:600;color:var(--text);}
  .trouble-row span{font-size:14px;color:var(--muted);line-height:1.8;}

  /* FAQ */
  .faq-wrap{max-width:800px;}
  .faq-item{
    border-bottom:1px solid var(--line);
    padding:4px 0 4px 14px;
    position:relative;
  }
  .faq-item::before{
    content:"";
    position:absolute;left:0;top:6px;bottom:6px;
    width:3px;border-radius:2px;
    background:transparent;
    transition:background .2s ease;
  }
  .faq-item[open]::before{background:var(--cyan);}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    padding:16px 30px 16px 4px;
    font-size:16px;
    font-weight:600;
    color:var(--text);
    position:relative;
    transition:color .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";
    position:absolute;right:6px;top:50%;
    transform:translateY(-50%);
    font-size:18px;color:var(--violet);
    transition:transform .2s ease;
  }
  .faq-item[open] summary::after{content:"−";}
  .faq-item summary:hover{color:var(--violet);}
  .faq-body{
    padding:0 24px 18px 4px;
    font-size:15px;
    line-height:1.85;
    color:var(--muted);
  }

  /* CTA */
  .cta-band{
    background:linear-gradient(120deg,var(--violet-deep) 0%,var(--violet-mid) 100%);
    border-radius:var(--r-card);
    padding:34px 36px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    color:#fff;
    position:relative;
    overflow:hidden;
  }
  .cta-band::after{
    content:"";
    position:absolute;left:-30px;bottom:-50px;
    width:180px;height:180px;
    background-image:radial-gradient(rgba(255,106,61,.6) 1.5px,transparent 1.6px);
    background-size:18px 18px;
    opacity:.2;
  }
  .cta-band h2{font-size:24px;font-weight:700;margin-bottom:8px;position:relative;z-index:2;}
  .cta-band p{color:#CFC7E8;font-size:15px;max-width:620px;position:relative;z-index:2;}
  .cta-band .btn{position:relative;z-index:2;flex:0 0 auto;}

  /* 页脚 */
  .site-footer{
    background:var(--violet-deep);
    color:#B9B2D4;
    margin-top:64px;
    padding-top:56px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:32px;
    padding-bottom:40px;
  }
  .footer-brand .brand{margin-bottom:16px;}
  .footer-brand p{font-size:14px;line-height:1.9;color:#9B94BC;max-width:320px;}
  .footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
  .footer-col ul li{margin-bottom:10px;font-size:14px;color:#9B94BC;}
  .footer-col ul li a{color:#C4BDDD;font-size:14px;}
  .footer-col ul li a:hover{color:var(--cyan);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.08);
    padding-top:20px;
    padding-bottom:26px;
    display:flex;
    justify-content:space-between;
    gap:14px;
    flex-wrap:wrap;
    font-size:13px;
    color:#8179A6;
  }

  /* 响应式 */
  @media (max-width:1279px){
    .page-hero h1{font-size:36px;}
    .steps-layout{gap:28px;}
  }
  @media (max-width:1023px){
    .container{padding:0 24px;}
    .nav-chips{display:none;}
    .nav-toggle{display:inline-flex;}
    .header-actions .btn{display:none;}
    .steps-layout{grid-template-columns:1fr;}
    .steps-rail{position:static;padding:16px;}
    .rail-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;}
    .rail-list li{flex:0 0 auto;}
    .rail-item{background:var(--violet-tint);}
    .rail-label{white-space:nowrap;}
    .rail-title{display:none;}
    .prep-wrap{grid-template-columns:1fr;}
    .trouble-row{grid-template-columns:1fr;gap:8px;}
    .page-hero h1{font-size:32px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  }
  @media (max-width:767px){
    body{font-size:16px;}
    .container{padding:0 18px;}
    .section{padding:48px 0;}
    .section-head h2{font-size:24px;}
    .page-hero{padding-bottom:40px;}
    .page-hero h1{font-size:27px;margin:12px 0;}
    .page-hero .lead{font-size:15px;}
    .step-block{padding:20px;}
    .step-block h3{font-size:18px;}
    .step-block p{font-size:15px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px;}
    .cta-band .btn{width:100%;}
    .faq-item{width:100%;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;gap:8px;}
    .brand-text{font-size:16px;}
  }
  @media (max-width:520px){
    .hero-points{gap:10px 18px;}
    .page-hero h1{font-size:25px;}
    .step-head{gap:10px;}
    .step-num{width:34px;height:34px;font-size:15px;}
  }

/* roulang page: category2 */
:root{
  --purple-900:#1C1235;
  --purple-800:#2A1B4E;
  --purple-600:#5B3CE8;
  --purple-100:#EEE9FF;
  --purple-50:#F0EDFA;
  --cyan:#2FD6C4;
  --orange:#FF6A3D;
  --orange-dark:#E4542B;
  --bg:#F5F3FA;
  --white:#FFFFFF;
  --ink:#181327;
  --ink-2:#5A5470;
  --ink-3:#8C86A0;
  --line:#E4E0F0;
  --ok:#1FA971;
  --err:#E5484D;
  --r-lg:16px;
  --r-md:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(28,18,53,.06);
  --sh-2:0 12px 32px rgba(42,27,78,.14);
  --sh-3:0 20px 48px rgba(28,18,53,.20);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body.site-body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.92;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--purple-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--orange-dark);}
button,input{font:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--purple-900);font-weight:800;flex:0 0 auto;}
.brand:hover{color:var(--purple-900);}
.brand-mark{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:3px;width:26px;height:26px;flex:0 0 auto;}
.brand-mark i{display:block;background:var(--purple-600);border-radius:2px;}
.brand-mark i:nth-child(1),.brand-mark i:nth-child(9){background:var(--cyan);}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.02em;white-space:nowrap;}

.nav-chips{display:flex;align-items:center;gap:8px;margin-left:8px;}
.chip{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;
  height:36px;padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--purple-50);
  color:var(--purple-800);
  font-size:14px;font-weight:600;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.chip:hover{background:#E4DEFF;color:var(--purple-600);}
.chip.is-active{background:var(--purple-900);color:#fff;}
.chip.is-active::after{
  content:"";position:absolute;left:50%;bottom:-10px;
  width:26px;height:3px;border-radius:3px;background:var(--cyan);
  transform:translateX(-50%);
}
.header-cta{margin-left:auto;flex:0 0 auto;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-md);
  background:var(--purple-50);border:1px solid var(--line);
  cursor:pointer;margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--purple-800);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--purple-800);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:80;pointer-events:none;}
.mobile-drawer.is-open{pointer-events:auto;}
.drawer-mask{position:absolute;inset:0;background:rgba(28,18,53,.4);opacity:0;transition:opacity .25s ease;}
.mobile-drawer.is-open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(340px,86vw);
  background:#fff;padding:22px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;
}
.mobile-drawer.is-open .drawer-panel{transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:36px;height:36px;border-radius:var(--r-md);border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink-2);}
.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.drawer-links .chip{height:44px;width:100%;}
.drawer-links .chip.is-active::after{display:none;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(255,106,61,.28);}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,106,61,.34);}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);}
.btn-ghost{border-color:rgba(255,255,255,.4);color:#fff;background:transparent;}
.btn-ghost:hover{background:var(--purple-100);color:var(--purple-900);border-color:var(--purple-100);}
.btn-outline{border-color:rgba(91,60,232,.4);color:var(--purple-600);background:#fff;}
.btn-outline:hover{background:var(--purple-100);color:var(--purple-900);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* Hero */
.hero{position:relative;background:var(--purple-900);color:#fff;padding:60px 0 68px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;right:-30px;top:-40px;width:300px;height:300px;
  background-image:radial-gradient(rgba(47,214,196,.6) 2px,transparent 2px);
  background-size:26px 26px;opacity:.14;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(47,214,196,.14);color:var(--cyan);font-size:13px;font-weight:600;
}
.hero h1{font-size:42px;line-height:1.25;font-weight:800;letter-spacing:.01em;margin:18px 0 14px;}
.hero-sub{font-size:17px;color:#CFC7E8;margin-bottom:26px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:28px;font-size:14px;color:#D6D0EA;}
.hero-points span{display:inline-flex;align-items:center;gap:8px;}
.hero-points span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);}
.hero-panel{
  background:var(--purple-800);
  border:1px solid rgba(47,214,196,.22);
  border-radius:20px;padding:24px;box-shadow:var(--sh-3);
}
.hero-panel h2{font-size:16px;font-weight:600;color:#fff;margin-bottom:6px;}
.hero-panel .panel-hint{font-size:13px;color:#A79FC4;margin-bottom:8px;}
.panel-row{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.14);}
.panel-row:last-child{border-bottom:0;padding-bottom:0;}
.panel-dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);margin-top:9px;flex:0 0 auto;}
.panel-dot.warn{background:var(--orange);}
.panel-title{font-size:15px;font-weight:600;color:#fff;}
.panel-desc{font-size:13px;line-height:1.7;color:#B9B1D6;}

/* 板块 */
.section{padding:72px 0;}
.section-alt{background:#fff;}
.section-head{margin-bottom:32px;max-width:820px;}
.eyebrow{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--purple-50);color:var(--purple-600);font-size:13px;font-weight:600;margin-bottom:14px;
}
.section-title{font-size:30px;line-height:1.35;font-weight:700;color:var(--purple-900);margin-bottom:12px;}
.section-desc{font-size:16px;color:var(--ink-2);}

/* 数据卡 */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.stat-num{font-size:28px;font-weight:800;color:var(--purple-600);letter-spacing:.02em;font-variant-numeric:tabular-nums;line-height:1.3;}
.stat-label{font-size:14px;font-weight:600;color:var(--ink);margin-top:6px;}
.stat-note{font-size:13px;line-height:1.7;color:var(--ink-3);margin-top:4px;}

/* 案例矩阵 */
.case-row{display:grid;gap:24px;margin-bottom:24px;}
.case-row:last-child{margin-bottom:0;}
.case-row.wide-left{grid-template-columns:7fr 5fr;}
.case-row.wide-right{grid-template-columns:5fr 7fr;}
.case-card{
  position:relative;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.case-media{aspect-ratio:16/9;overflow:hidden;background:var(--purple-50);}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.case-card:hover .case-media img{transform:scale(1.03);}
.case-body{padding:22px 24px 24px;flex:1;}
.badge{
  position:absolute;top:16px;right:16px;z-index:2;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
}
.badge-ok{background:rgba(255,255,255,.95);color:var(--ok);border:1px solid rgba(31,169,113,.32);}
.badge-warn{background:rgba(255,255,255,.95);color:var(--err);border:1px solid rgba(229,72,77,.32);}
.case-title{font-size:20px;line-height:1.4;font-weight:600;color:var(--purple-900);margin-bottom:16px;padding-right:70px;}
.case-block{margin-bottom:14px;}
.case-block:last-child{margin-bottom:0;}
.case-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:2px 8px;border-radius:6px;margin-bottom:8px;
}
.case-tag.sym{background:rgba(229,72,77,.1);color:var(--err);}
.case-tag.fix{background:rgba(47,214,196,.16);color:#137F72;}
.case-text{font-size:15px;line-height:1.85;color:var(--ink-2);}

/* 反馈准备 */
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.prep-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease;
}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.prep-num{
  display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--purple-50);color:var(--purple-600);
  font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
}
.prep-card h3{font-size:18px;font-weight:600;color:var(--purple-900);margin:14px 0 8px;}
.prep-card p{font-size:15px;line-height:1.85;color:var(--ink-2);}

/* FAQ */
.faq-wrap{max-width:800px;border-top:1px solid var(--line);}
.faq-item{
  border-bottom:1px solid var(--line);
  border-left:3px solid transparent;
  padding-left:18px;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item[open]{border-left-color:var(--cyan);background:rgba(240,237,250,.45);}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 34px 20px 0;
  font-size:16px;font-weight:600;color:var(--purple-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:8px;top:26px;
  width:9px;height:9px;border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);
  transform:rotate(45deg);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--purple-600);}
.faq-body{padding:0 34px 20px 0;font-size:15px;line-height:1.85;color:var(--ink-2);animation:faqIn .28s ease;}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* CTA */
.cta-block{
  position:relative;background:var(--purple-900);color:#fff;
  border-radius:20px;padding:40px;
  display:grid;grid-template-columns:7fr 5fr;gap:36px;align-items:center;
  overflow:hidden;
}
.cta-block::before{
  content:"";position:absolute;left:-40px;bottom:-60px;width:240px;height:240px;
  background-image:radial-gradient(rgba(255,106,61,.7) 2px,transparent 2px);
  background-size:24px 24px;opacity:.12;pointer-events:none;
}
.cta-block h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:12px;}
.cta-block p{font-size:15px;line-height:1.8;color:#CFC7E8;}
.cta-form{display:flex;gap:12px;position:relative;}
.cta-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;
  border-radius:var(--r-md);border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.08);color:#fff;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input::placeholder{color:#A79FC4;}
.cta-form input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,214,196,.25);}
.cta-hint{font-size:13px;color:#A79FC4;margin-top:12px;position:relative;}

/* 页脚 */
.site-footer{background:var(--purple-900);color:#CFC7E8;padding-top:56px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:#A79FC4;margin-top:14px;max-width:330px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{list-style:none;padding:0;display:grid;gap:10px;}
.footer-col li{font-size:14px;color:#A79FC4;}
.footer-col a{font-size:14px;color:#B9B1D6;}
.footer-col a:hover{color:var(--cyan);}
.site-footer .brand-mark i{background:rgba(47,214,196,.75);}
.site-footer .brand-mark i:nth-child(1),.site-footer .brand-mark i:nth-child(9){background:var(--cyan);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#8C86A0;
}
.footer-bottom a{color:#8C86A0;}
.footer-bottom a:hover{color:var(--cyan);}

/* 响应式 */
@media (max-width:1279px){
  .hero h1{font-size:38px;}
}
@media (max-width:1023px){
  .nav-chips{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:48px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero h1{font-size:33px;}
  .section{padding:56px 0;}
  .section-title{font-size:26px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .case-row.wide-left,.case-row.wide-right{grid-template-columns:1fr;}
  .prep-grid{grid-template-columns:1fr;}
  .cta-block{grid-template-columns:1fr;gap:24px;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:639px){
  body.site-body{font-size:16px;}
  .container{padding:0 16px;}
  .brand-text{font-size:15px;}
  .hero h1{font-size:27px;}
  .hero-sub{font-size:15px;}
  .hero-points{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px;font-size:13px;}
  .hero-actions .btn{width:100%;}
  .section{padding:48px 0;}
  .section-title{font-size:23px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:14px;}
  .stat-num{font-size:23px;}
  .case-body{padding:18px 18px 20px;}
  .case-title{font-size:18px;padding-right:0;}
  .badge{position:static;margin-bottom:12px;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .faq-item{padding-left:14px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-block h2{font-size:22px;}
}

/* roulang page: category3 */
:root{
    --ink:#1C1235;
    --ink-2:#2A1B4E;
    --violet:#5B3CE8;
    --violet-soft:#EEE9FF;
    --violet-mist:#F4F1FE;
    --cyan:#2FD6C4;
    --coral:#FF6A3D;
    --coral-d:#E4542B;
    --bg:#F5F3FA;
    --surface:#FFFFFF;
    --text:#181327;
    --muted:#5A5470;
    --weak:#8C86A0;
    --border:#E4E0F0;
    --ok:#1FA971;
    --bad:#E5484D;
    --r-lg:16px;
    --r-md:12px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(28,18,53,.06);
    --sh-2:0 12px 32px rgba(42,27,78,.14);
    --sh-3:0 20px 48px rgba(28,18,53,.20);
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.9;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--violet);text-decoration:none;transition:color .2s ease,background .2s ease;}
  a:hover{color:var(--coral-d);}
  button{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding-left:0;list-style:none;}
  :focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

  /* ------- 品牌标识 ------- */
  .brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:.01em;white-space:nowrap;}
  .brand:hover{color:var(--ink);}
  .brand-mark{display:grid;grid-template-columns:repeat(3,5px);gap:3px;flex:none;}
  .brand-mark i{width:5px;height:5px;border-radius:50%;background:#B7A9F2;display:block;}
  .brand-mark i:nth-child(5){background:var(--cyan);}
  .brand-mark i:nth-child(1),
  .brand-mark i:nth-child(3),
  .brand-mark i:nth-child(7),
  .brand-mark i:nth-child(9){background:var(--violet);}
  .brand-text{line-height:1;}

  /* ------- 导航 ------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.96);
    backdrop-filter:saturate(140%) blur(6px);
    border-bottom:1px solid var(--border);
    transition:box-shadow .25s ease;
  }
  .site-header.is-scrolled{box-shadow:var(--sh-2);}
  .header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s ease;}
  .site-header.is-scrolled .header-inner{height:60px;}
  .nav-chips{display:flex;align-items:center;gap:8px;margin-left:16px;}
  .chip{
    display:inline-flex;align-items:center;justify-content:center;
    height:36px;padding:0 14px;border-radius:var(--r-pill);
    background:#F0EDFA;color:var(--ink-2);
    font-size:14px;font-weight:600;white-space:nowrap;position:relative;
    transition:background .2s ease,color .2s ease;
  }
  .chip:hover{background:#E4DDFB;color:var(--violet);}
  .chip.is-active{background:var(--ink);color:#fff;}
  .chip.is-active:hover{color:#fff;}
  .chip.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:-10px;
    height:3px;border-radius:2px;background:var(--cyan);
  }
  .header-cta{margin-left:auto;display:flex;align-items:center;gap:12px;}

  /* ------- 按钮 ------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border:1px solid transparent;border-radius:var(--r-md);
    font-weight:600;cursor:pointer;white-space:nowrap;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  }
  .btn-sm{height:36px;padding:0 18px;font-size:14px;}
  .btn-md{height:40px;padding:0 22px;font-size:15px;}
  .btn-lg{height:48px;padding:0 24px;font-size:16px;}
  .btn-primary{background:var(--coral);color:#fff;box-shadow:0 6px 16px rgba(255,106,61,.28);}
  .btn-primary:hover{background:var(--coral-d);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(228,84,43,.32);}
  .btn-primary:active{transform:translateY(0);filter:brightness(.95);}
  .btn-ghost{border-color:var(--violet);color:var(--violet);background:transparent;}
  .btn-ghost:hover{background:var(--violet-soft);color:var(--violet);}

  .nav-toggle{
    display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--border);
    border-radius:var(--r-md);background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
  }
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}

  /* ------- 移动抽屉 ------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(28,18,53,.4);z-index:70;
    opacity:0;pointer-events:none;transition:opacity .3s ease;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto;}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:min(340px,86vw);
    background:#fff;z-index:80;padding:22px 20px 28px;
    transform:translateX(102%);transition:transform .3s ease;
    overflow-y:auto;box-shadow:var(--sh-3);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
  .drawer-close{
    width:36px;height:36px;border-radius:var(--r-md);border:1px solid var(--border);
    background:#fff;color:var(--ink);font-size:18px;line-height:1;cursor:pointer;
  }
  .drawer-chips{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:22px;}
  .drawer-chips .chip{height:40px;justify-content:center;background:#F5F3FA;}
  .drawer-chips .chip.is-active::after{display:none;}
  .drawer .btn{width:100%;}

  /* ------- 顶部信息条 ------- */
  .notice-bar{background:var(--ink);color:#EDE9FA;}
  .notice-bar .container{display:flex;align-items:center;gap:10px;min-height:44px;padding-top:8px;padding-bottom:8px;font-size:14px;line-height:1.6;}
  .notice-dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);flex:none;box-shadow:0 0 0 4px rgba(47,214,196,.16);}
  .notice-bar strong{color:#fff;font-weight:600;}

  /* ------- 文档头部 ------- */
  .doc-head{padding:40px 0 8px;}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--weak);margin-bottom:16px;flex-wrap:wrap;}
  .breadcrumb a{color:var(--weak);}
  .breadcrumb a:hover{color:var(--violet);}
  .breadcrumb span{color:#C9C3DA;}
  .doc-head h1{
    font-size:42px;line-height:1.28;font-weight:800;letter-spacing:.01em;color:var(--ink);
    max-width:900px;
  }
  .doc-head .lead{
    margin-top:16px;max-width:760px;font-size:16.5px;line-height:1.95;color:var(--muted);
  }
  .meta-row{
    display:flex;align-items:center;gap:10px;flex-wrap:wrap;
    margin-top:20px;font-size:13.5px;color:var(--weak);
  }
  .meta-row .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
    background:var(--violet-soft);color:var(--violet);font-size:13px;font-weight:600;
  }
  .meta-row .sep{color:#D6D0E6;}

  /* ------- 文档布局 ------- */
  .doc-layout{
    display:grid;grid-template-columns:236px minmax(0,1fr);gap:64px;
    padding:36px 0 80px;align-items:start;
  }
  .toc{position:sticky;top:96px;align-self:start;}
  .toc-title{font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--weak);margin-bottom:12px;padding-left:14px;}
  .toc-list{border-left:2px solid var(--border);}
  .toc-list a{
    display:block;padding:9px 14px;margin-left:-2px;
    border-left:2px solid transparent;
    font-size:14px;color:var(--muted);line-height:1.55;
    transition:color .2s ease,background .2s ease,border-color .2s ease;
  }
  .toc-list a:hover{color:var(--violet);background:#F7F5FD;}
  .toc-list a.is-current{color:var(--ink);font-weight:600;border-left-color:var(--cyan);background:#F7F5FD;}

  .doc{max-width:720px;}
  .doc section{scroll-margin-top:100px;}
  .doc section + section{margin-top:56px;}
  .doc h2{
    display:flex;align-items:baseline;gap:12px;
    font-size:24px;line-height:1.4;font-weight:700;color:var(--ink);
    margin:0 0 16px;
  }
  .doc h2 .num{
    font-size:14px;font-weight:700;color:var(--cyan);
    font-variant-numeric:tabular-nums;letter-spacing:.08em;flex:none;
  }
  .doc h3{font-size:18px;font-weight:600;color:var(--ink);margin:26px 0 10px;}
  .doc p{font-size:17px;line-height:1.95;color:var(--text);margin:0 0 1.3em;}
  .doc p.small{font-size:15px;color:var(--muted);line-height:1.85;}
  .doc ul.list{margin:0 0 1.3em;}
  .doc ul.list li{
    position:relative;padding-left:20px;margin-bottom:9px;
    font-size:16.5px;line-height:1.8;color:var(--text);
  }
  .doc ul.list li::before{
    content:"";position:absolute;left:2px;top:12px;
    width:6px;height:6px;border-radius:50%;background:var(--violet);
  }
  .doc ol.steps{margin:0 0 1.3em;counter-reset:step;}
  .doc ol.steps li{
    position:relative;padding-left:38px;margin-bottom:14px;
    font-size:16.5px;line-height:1.85;color:var(--text);
  }
  .doc ol.steps li::before{
    counter-increment:step;content:counter(step,decimal-leading-zero);
    position:absolute;left:0;top:2px;
    font-size:13px;font-weight:700;color:var(--violet);
    background:var(--violet-soft);border-radius:8px;
    width:28px;height:26px;display:flex;align-items:center;justify-content:center;
    font-variant-numeric:tabular-nums;
  }
  .callout{
    background:var(--violet-mist);border-left:3px solid var(--cyan);
    border-radius:0 var(--r-md) var(--r-md) 0;
    padding:16px 20px;margin:8px 0 24px;
    font-size:16px;line-height:1.85;color:var(--ink-2);
  }
  .callout strong{color:var(--ink);}
  .doc figure{margin:22px 0 28px;}
  .doc figure img{
    width:100%;aspect-ratio:16/9;object-fit:cover;
    border-radius:var(--r-md);background:#EFEBFA;
  }
  .doc figcaption{font-size:13px;line-height:1.7;color:var(--weak);margin-top:10px;}

  /* ------- 表格 ------- */
  .table-wrap{
    margin:8px 0 26px;border:1px solid var(--border);border-radius:var(--r-md);
    overflow-x:auto;background:#fff;box-shadow:var(--sh-1);
  }
  table{width:100%;border-collapse:collapse;min-width:600px;font-size:15px;}
  thead th{
    background:var(--ink);color:#fff;font-weight:600;text-align:left;
    padding:13px 18px;font-size:14px;letter-spacing:.02em;white-space:nowrap;
  }
  tbody td{padding:13px 18px;border-top:1px solid var(--border);color:var(--muted);line-height:1.75;vertical-align:top;}
  tbody tr:nth-child(even){background:#FAF9FE;}
  tbody td:first-child{color:var(--ink);font-weight:600;}
  .badge-ok,.badge-bad{
    display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:var(--r-pill);
    font-size:13px;font-weight:600;white-space:nowrap;
  }
  .badge-ok{background:rgba(31,169,113,.12);color:var(--ok);}
  .badge-bad{background:rgba(229,72,77,.12);color:var(--bad);}

  /* ------- FAQ ------- */
  .faq-block{margin-top:56px;}
  .faq-block h2{display:flex;align-items:baseline;gap:12px;font-size:24px;font-weight:700;color:var(--ink);margin-bottom:18px;}
  .faq-block h2 .num{font-size:14px;font-weight:700;color:var(--cyan);font-variant-numeric:tabular-nums;letter-spacing:.08em;}
  .faq details{
    background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
    margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
    transition:box-shadow .2s ease,border-color .2s ease;
  }
  .faq details:hover{box-shadow:var(--sh-2);}
  .faq summary{
    list-style:none;cursor:pointer;padding:16px 20px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16px;font-weight:600;color:var(--ink);line-height:1.65;
  }
  .faq summary::-webkit-details-marker{display:none;}
  .faq summary::after{
    content:"+";flex:none;color:var(--violet);font-weight:700;font-size:18px;line-height:1;
  }
  .faq details[open] summary{box-shadow:inset 3px 0 0 var(--cyan);}
  .faq details[open] summary::after{content:"–";}
  .faq .ans{padding:0 20px 18px;font-size:15px;line-height:1.85;color:var(--muted);}
  .faq .ans a{font-weight:600;}

  /* ------- CTA ------- */
  .cta-band{
    position:relative;overflow:hidden;
    background:var(--ink);border-radius:20px;
    padding:34px 36px;margin-top:72px;
    display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
    box-shadow:var(--sh-3);
  }
  .cta-band::after{
    content:"";position:absolute;right:-40px;top:-40px;width:200px;height:200px;
    background-image:radial-gradient(var(--cyan) 1.5px,transparent 1.6px);
    background-size:20px 20px;opacity:.10;pointer-events:none;
  }
  .cta-band h2{
    font-size:24px;font-weight:700;color:#fff;line-height:1.4;margin:0 0 8px;
  }
  .cta-band p{font-size:15px;line-height:1.8;color:#C3BBDE;margin:0;max-width:620px;}

  /* ------- 页脚 ------- */
  .site-footer{background:var(--ink);color:#CFC8E6;margin-top:80px;padding-top:56px;}
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
  .footer-brand .brand{color:#fff;}
  .footer-brand .brand-text{color:#fff;}
  .footer-brand .brand-mark i{background:#6C55D8;}
  .footer-brand .brand-mark i:nth-child(5){background:var(--cyan);}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#B4ABD2;max-width:340px;}
  .footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
  .footer-col ul{margin:0;}
  .footer-col li{margin-bottom:10px;font-size:14px;line-height:1.7;color:#B4ABD2;}
  .footer-col a{color:#CFC8E6;font-size:14px;}
  .footer-col a:hover{color:var(--cyan);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);
    padding:18px 0 26px;display:flex;align-items:center;justify-content:space-between;
    gap:12px;flex-wrap:wrap;font-size:13px;color:#9E95C0;
  }

  /* ------- 响应式 ------- */
  @media (max-width:1279px){
    .header-inner{gap:16px;}
    .nav-chips{margin-left:8px;}
    .chip{padding:0 12px;font-size:13.5px;}
    .doc-layout{grid-template-columns:210px minmax(0,1fr);gap:44px;}
    .doc-head h1{font-size:36px;}
  }
  @media (max-width:1023px){
    .container{padding:0 24px;}
    .nav-chips,.header-cta{display:none;}
    .nav-toggle{display:flex;}
    .doc-layout{grid-template-columns:1fr;gap:28px;padding:24px 0 64px;}
    .toc{position:static;top:auto;}
    .toc-list{display:flex;gap:8px;overflow-x:auto;border-left:0;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
    .toc-list a{
      flex:none;margin-left:0;padding:8px 14px;border-radius:var(--r-pill);
      border-left:0;background:#F0EDFA;color:var(--ink-2);font-size:13.5px;
    }
    .toc-list a.is-current{background:var(--ink);color:#fff;border-left:0;}
    .doc{max-width:100%;}
    .doc-head{padding:28px 0 4px;}
    .doc-head h1{font-size:30px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .cta-band{padding:28px 24px;}
    .cta-band h2{font-size:21px;}
  }
  @media (max-width:639px){
    .container{padding:0 16px;}
    .doc-head h1{font-size:26px;line-height:1.32;}
    .doc-head .lead{font-size:15.5px;}
    .doc h2{font-size:20px;}
    .doc p{font-size:16px;line-height:1.9;}
    .doc ul.list li,.doc ol.steps li{font-size:15.5px;}
    .doc section + section{margin-top:44px;}
    .faq-block h2{font-size:20px;}
    .footer-grid{grid-template-columns:1fr;gap:26px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .cta-band{margin-top:52px;border-radius:16px;}
    .cta-band .btn{width:100%;}
    .notice-bar .container{font-size:13px;}
  }

/* roulang page: category4 */
:root{
  --ink:#1C1235;
  --ink-2:#2A1B4E;
  --violet:#5B3CE8;
  --violet-soft:#EEE9FF;
  --violet-line:#F0EDFA;
  --cyan:#2FD6C4;
  --coral:#FF6A3D;
  --coral-d:#E4542B;
  --bg:#F5F3FA;
  --white:#FFFFFF;
  --t1:#181327;
  --t2:#5A5470;
  --t3:#8C86A0;
  --line:#E4E0F0;
  --ok:#1FA971;
  --err:#E5484D;
  --r-card:16px;
  --r-input:12px;
  --r-btn:12px;
  --sh1:0 1px 2px rgba(28,18,53,.06);
  --sh2:0 12px 32px rgba(42,27,78,.14);
  --sh3:0 20px 48px rgba(28,18,53,.20);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--t1);
  background:var(--bg);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--violet);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--violet);}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:6px;
}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;color:var(--t1);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh1);
  transition:height .25s ease,box-shadow .25s ease,background .25s ease;
}
.header-inner{
  display:flex;align-items:center;gap:32px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-compact .header-inner{height:60px;}
.site-header.is-compact{box-shadow:var(--sh2);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-text{
  font-size:17px;font-weight:800;color:var(--ink);
  letter-spacing:.02em;white-space:nowrap;
}
.brand-mark{
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);
  gap:3px;width:26px;height:26px;flex:0 0 auto;
}
.brand-mark i{display:block;background:var(--violet);border-radius:50%;opacity:.9;}
.brand-mark i:nth-child(2),
.brand-mark i:nth-child(4),
.brand-mark i:nth-child(6),
.brand-mark i:nth-child(8){background:var(--cyan);}
.brand-mark i:nth-child(5){background:var(--coral);}
.nav-chips{display:flex;align-items:center;gap:8px;margin-left:8px;flex:1 1 auto;}
.chip{
  display:inline-flex;align-items:center;
  height:36px;padding:0 14px;border-radius:999px;
  background:var(--violet-line);color:var(--ink);
  font-size:14px;font-weight:600;line-height:1;
  position:relative;white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.chip:hover{background:#E4DEF8;color:var(--violet);}
.chip.is-active{background:var(--ink);color:#fff;}
.chip.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-11px;height:3px;
  background:var(--cyan);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 6px 18px rgba(255,106,61,.28);}
.btn-primary:hover{background:var(--coral-d);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,106,61,.32);}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--violet);}
.btn-ghost:hover{background:var(--violet-soft);color:var(--violet);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--violet-soft);color:var(--violet);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- mobile drawer ---------- */
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border-radius:var(--r-input);
  background:var(--violet-line);border:1px solid var(--line);cursor:pointer;padding:0 10px;
}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;}
.drawer{position:fixed;inset:0;z-index:90;pointer-events:none;}
.drawer-mask{
  position:absolute;inset:0;background:rgba(28,18,53,.4);
  opacity:0;transition:opacity .25s ease;
}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(88vw,340px);
  background:var(--ink);color:#fff;
  padding:22px 20px 28px;
  display:flex;flex-direction:column;gap:20px;
  transform:translateX(100%);transition:transform .28s ease;
  overflow-y:auto;
}
.drawer.is-open{pointer-events:auto;}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-head .brand-text{color:#fff;font-size:16px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.22);
  background:transparent;color:#fff;font-size:20px;line-height:1;cursor:pointer;
}
.drawer-chips{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.drawer-chips .chip{
  width:100%;justify-content:center;background:rgba(255,255,255,.08);color:#EDE9FF;
}
.drawer-chips .chip:hover{background:rgba(255,255,255,.16);color:#fff;}
.drawer-chips .chip.is-active{background:var(--violet);color:#fff;}
.drawer-chips .chip.is-active::after{display:none;}

/* ---------- banner ---------- */
.page-banner{
  position:relative;
  min-height:224px;
  display:flex;align-items:center;
  background-image:linear-gradient(90deg,rgba(28,18,53,.94) 0%,rgba(28,18,53,.88) 45%,rgba(28,18,53,.62) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  color:#fff;overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;right:32px;top:24px;width:150px;height:150px;
  background-image:radial-gradient(rgba(255,255,255,.85) 1.6px,transparent 1.7px);
  background-size:26px 26px;opacity:.14;pointer-events:none;
}
.page-banner .container{position:relative;z-index:2;padding-top:34px;padding-bottom:34px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:14px;}
.crumbs a{color:rgba(255,255,255,.78);}
.crumbs a:hover{color:var(--cyan);}
.page-banner h1{
  color:#fff;font-size:34px;font-weight:800;line-height:1.28;max-width:820px;
}
.page-banner p{
  margin-top:14px;max-width:680px;color:rgba(255,255,255,.78);font-size:15.5px;line-height:1.85;
}
.banner-live{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  height:28px;padding:0 12px;border-radius:999px;
  background:rgba(47,214,196,.14);border:1px solid rgba(47,214,196,.42);
  color:var(--cyan);font-size:13px;font-weight:600;
}
.banner-live .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);}

/* ---------- sections ---------- */
.section{padding:64px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head h2{font-size:26px;font-weight:700;line-height:1.35;position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;width:4px;height:22px;border-radius:2px;background:var(--violet);
}
.section-head p{margin-top:8px;color:var(--t2);font-size:14.5px;max-width:640px;}
.text-link{font-size:14px;font-weight:600;color:var(--violet);white-space:nowrap;}
.text-link:hover{text-decoration:underline;}

/* ---------- stat strip ---------- */
.stat-strip{background:#fff;border-bottom:1px solid var(--line);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.stat-cell{padding:26px 24px;border-left:1px solid var(--line);}
.stat-cell:first-child{border-left:0;padding-left:0;}
.stat-cell .k{font-size:13px;color:var(--t3);}
.stat-cell .v{font-size:28px;font-weight:800;color:var(--ink);line-height:1.3;margin-top:4px;}
.stat-cell .v small{font-size:14px;font-weight:600;color:var(--t2);margin-left:4px;}

/* ---------- filter chips ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px;}
.filter-chip{
  height:34px;padding:0 16px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--t2);font-size:13.5px;font-weight:600;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.filter-chip:hover{background:var(--violet-soft);color:var(--violet);border-color:var(--violet-soft);}
.filter-chip.is-on{background:var(--ink);color:#fff;border-color:var(--ink);}

/* ---------- timeline ---------- */
.timeline{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);overflow:hidden;
}
.tl-item{
  display:grid;grid-template-columns:132px minmax(0,1fr) auto;
  gap:26px;align-items:start;
  padding:22px 26px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.tl-item:last-child{border-bottom:0;}
.tl-item:hover{background:#F7F5FE;}
.tl-item.is-hidden{display:none;}
.tl-date{display:flex;flex-direction:column;gap:2px;}
.tl-date .d{font-size:19px;font-weight:800;color:var(--violet);letter-spacing:.02em;}
.tl-date .y{font-size:12.5px;color:var(--t3);}
.tl-body h3{font-size:17px;font-weight:600;line-height:1.55;}
.tl-body h3 a{color:var(--t1);}
.tl-body h3 a:hover{color:var(--violet);}
.tl-body p{margin-top:6px;font-size:14.5px;color:var(--t2);line-height:1.8;}
.tl-meta{display:flex;flex-direction:column;align-items:flex-end;gap:8px;padding-top:2px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--violet-soft);color:var(--violet);
  font-size:13px;font-weight:600;white-space:nowrap;
}
.tag-ok{background:rgba(31,169,113,.12);color:var(--ok);}
.tag-warn{background:rgba(229,72,77,.12);color:var(--err);}

/* ---------- highlight ---------- */
.highlight-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;}
.figure{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh1);aspect-ratio:16/10;background:var(--violet-soft);
}
.figure img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.figure:hover img{transform:scale(1.03);}
.highlight-body h2{font-size:26px;font-weight:700;line-height:1.35;}
.highlight-body > p{margin-top:14px;color:var(--t2);font-size:15.5px;}
.point-list{margin-top:22px;display:grid;gap:12px;}
.point-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;border-radius:var(--r-input);
  background:var(--violet-line);font-size:14.5px;color:var(--t1);
}
.point-list .idx{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:var(--cyan);color:var(--ink);font-size:12.5px;font-weight:800;
  display:flex;align-items:center;justify-content:center;line-height:1;margin-top:3px;
}

/* ---------- rules list ---------- */
.rule-list{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line);}
.rule-item{
  padding:22px 26px 22px 0;border-bottom:1px solid var(--line);
}
.rule-item:nth-child(odd){padding-right:44px;border-right:1px solid var(--line);}
.rule-item:nth-child(even){padding-left:44px;}
.rule-item dt{font-size:15.5px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:8px;}
.rule-item dt::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);flex:0 0 auto;}
.rule-item dd{margin:8px 0 0;font-size:14.5px;color:var(--t2);line-height:1.85;}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 8px 18px 18px;
  font-size:16px;font-weight:600;color:var(--t1);
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  transition:color .2s ease,background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;color:var(--violet);font-weight:700;font-size:18px;line-height:1.4;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"–";transform:rotate(0deg);}
.faq-item summary:hover{color:var(--violet);}
.faq-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;
  background:transparent;transition:background .25s ease;
}
.faq-item[open]::before{background:var(--cyan);}
.faq-item .faq-a{
  padding:0 34px 22px 18px;font-size:15px;line-height:1.85;color:var(--t2);
}

/* ---------- cta ---------- */
.cta-block{
  position:relative;overflow:hidden;
  background:var(--ink);color:#fff;border-radius:var(--r-card);
  padding:44px 48px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.cta-block::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:220px;height:220px;
  background-image:radial-gradient(rgba(255,255,255,.9) 1.6px,transparent 1.7px);
  background-size:24px 24px;opacity:.08;pointer-events:none;
}
.cta-block h2{color:#fff;font-size:25px;font-weight:700;line-height:1.35;}
.cta-block p{margin-top:10px;color:rgba(255,255,255,.74);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:72px;position:relative;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;left:50%;top:-60px;transform:translateX(-50%);
  width:420px;height:220px;
  background-image:radial-gradient(rgba(255,255,255,.9) 1.6px,transparent 1.7px);
  background-size:28px 28px;opacity:.06;pointer-events:none;
}
.footer-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
  padding-top:56px;padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark i{background:var(--cyan);}
.footer-brand .brand-mark i:nth-child(5){background:var(--coral);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.62);}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:18px;padding-bottom:26px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .tl-item{grid-template-columns:118px minmax(0,1fr) auto;gap:20px;padding:20px 22px;}
  .highlight-grid{gap:32px;}
}
@media (max-width:1023px){
  .nav-chips{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn.hide-sm{display:none;}
  .page-banner h1{font-size:29px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(odd){border-left:0;padding-left:0;}
  .stat-cell:nth-child(3),
  .stat-cell:nth-child(4){border-top:1px solid var(--line);}
  .highlight-grid{grid-template-columns:1fr;}
  .figure{order:-1;}
  .rule-list{grid-template-columns:1fr;}
  .rule-item:nth-child(odd){padding-right:0;border-right:0;}
  .rule-item:nth-child(even){padding-left:0;}
  .cta-block{grid-template-columns:1fr;padding:36px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{height:64px;gap:16px;}
  .brand-text{font-size:15.5px;}
  .section{padding:48px 0;}
  .page-banner{min-height:200px;}
  .page-banner h1{font-size:25px;}
  .page-banner p{font-size:14.5px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:24px;}
  .section-head h2{font-size:22px;}
  .highlight-body h2{font-size:22px;}
  .tl-item{grid-template-columns:1fr;gap:10px;padding:18px 16px;}
  .tl-date{flex-direction:row;align-items:baseline;gap:8px;}
  .tl-meta{flex-direction:row;align-items:center;justify-content:flex-start;padding-top:0;}
  .cta-block{padding:28px 20px;}
  .cta-block h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;padding-top:40px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:520px){
  .stat-grid{grid-template-columns:1fr;}
  .stat-cell{border-left:0;padding-left:0;}
  .stat-cell + .stat-cell{border-top:1px solid var(--line);}
  .filter-chip{height:32px;padding:0 12px;font-size:13px;}
}